Early Sportster Primary Service

. . . mine was leaking, so I scraped the gasket surfaces, sprayed it all down with "brake cleaner," got out my tube of "The Right Stuff" (the best gasket maker/sealer you can buy) - and glued it all tight.  Let it set overnight.  Add 2 cups (or 1/2 quart) of Bel-Ray 85W - and be on my way . . .

Helpful Tips:

1. Don't run your primary chain too tight 

(check it in a few spots to make sure)

2. Chain Too tight will just eat your plastic tension shoe and you'll
get shavings in your transmission oil passages
(shafts, bearings, etc.)

3.  Chain Too loose and your clutch basket might "kink"
a bit more during kick starting and your kicker will slip
and you'll hurt your leg.

4. 5/8" to 3/4" up and down movement is best.